chemexec – Creating (chemical) exercise sheets

The pack­age pro­vides en­vi­ron­ments and com­mands that the au­thor
needed when prepar­ing ex­er­cise sheets and other teach­ing
ma­te­rial. In par­tic­u­lar, the pack­age sup­ports the cre­ation of
ex­er­cise sheets, with sep­a­rat­ing print­ing of so­lu­tions